<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<form action="/demo2/loginServlet" method="post">
    username: <input type="text" name="username"> <br>
    password: <input type="password" name="password"> <br>

    <input type="submit" value="登录">
</form>

</body>
</html>